Finding the Third Proportional to 21,991 and 34,984

Step by Step Solution

1. Step 1: Write the proportion equation
   21,991 : 34,984 = 34,984 : x
2. Step 2: Convert to fraction form
   21,991/34,984 = 34,984/x
3. Step 3: Cross multiply
   21,991x = 34,984 × 34,984
4. Step 4: Simplify right side
   21,991x = 1,223,880,256
5. Step 5: Solve for x
   x = 1,223,880,256/21,991
6. Step 6: Final answer
   x = 55,653.69